Automatic performance controller for piano



FIG. 1 is a perspective view of the top, front and right side of an automatic performance controller for piano;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a ;right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for an automatic performance controller for piano, as shown. 